Leonard egleston



L. EGGLESTON.

Machine for Polishing the Inner Surface of Tnbes. No. 71,471. V Patented Nov. 26, 1867.

min/@3565 Immjw stones or emery-blocks arefastened by pivots, so as to allow them a. slight longitudinal oscillation sufiicientto pressing the polishing-stones'or emery-blocks against the inside of the tubes.

LEONARD. EGLESTON, OF SENECA FALLS, NEW YORK, ASSIGNOR TO p11}? RUMSEY 86 00., OF THE SAME PLACE.

LetterePatent No.. 71,471, dated November 26, 1867.

'dtln 5x11211111: nfemh it it time new; $21M- ant mttingmri hi it: time- T0 ALL'WHOM IT MAY concnn'm Be it known that I, LEONARD Ecnnsroiv, of Seneca. Falls, in the county of Seneca,.and State of New York, have invented a new and useful Improvement in Machines for Polishing the InnerSurfaces of Metallic Tubes and I' do hereby declare that the following is a full, clear, and exact description of the same, reference being I had tothe annexeddrawings, in which-- Figure 1 is a perspective view, and Figure 2 a top view. The same letters are employed in both the figures in the indication of identicalparts.

Avis the shaft, supported upon pillow-blocksH H. 'This shaft may bedriven at any required speed by the pulley B, or by gearing. One end of the shaft projects beyond the pillow-block, and terminates with a head, A, fitted to receive the crossed levers C G, which are attached by a pivot to the head A'in such manneras to open like a pair of blacksmiths tongs. On the end of the long arm of these levers semi-cylindricalpollshingpermit them-to conform their polishing-surfaces to the taper of conical tubes, and to bring the whole surface in contact withthe face of the tube. E is a cone sliding upon the shaft A, between the short arms of the crossed levers C C. This cone may be moved along theshaft by means of the yoke F, operated by the lever G. By i the action of the hand upon this lever the cone may bepressed-between the levers, forcing them apart, and

What I claim as my invention," and desire to secure by Letters Patent, isg Y 1. r The combination of the shaft A, sliding cone E, crossed levers C C, and polishersD, s described. .7 a r -2. The combination of the lever G, yoke F, shaft A,- cone E, and crossed levers G C, substantially as and forthe purposeset forth; I v i 3. The combination of the crossed levers C C. and polishers D, when the latter are attached by a pivot, so as to permittheir longitudinal oscillation, substantially in the manner and for'the purpose set forth. 7

ubstantially as;

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. i

LEONARD TEGIJESTON.

Witnesses: V

Josnrn H. KNIGHT, Homes N. RUMSEY. 

